ULTIMET® alloy Site
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ULTIMET® alloy
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ULTIMET® alloy
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Machining |
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ULTIMET alloy can be successfully turned, drilled, and milled provided appropriate tooling and parameters are employed. The alloy possesses high strength, and therefore resists metal removal. It also work hardens rapidly.
The alloy is most easily machined in the solution annealed condition. The following are guidelines for performing typical machining operations upon ULTIMET alloy wrought stock. Exact details for specific machining jobs will vary with circumstances of the particular job. Other tool materials not listed here may be suitable for machining
ULTIMET alloy under various conditions. For further information, please consult Haynes publication H-2086. |
| Recommended Tool Types and Machining Conditions |
| Operations |
Carbide Tools |
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| Drilling |
Carbide-tipped drills are recommended. Use 135° included angle on point.
Speed: 30-35 sfm.
Feed: 0.002 in. rev. < 1/4 in. dia.,0.004 in. rev. > 1/4 in. dia.
Oil1 or water-base2 coolant. Coolant-feed carbide tipped drills may be economical in some setups. |
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Roughing;
Turning or Facing |
C-2 or C-4 grade: Positive rake square insert, 15° or 45° SCEA3, 1/32 in. nose radius.
Tool holder: 5° pos. back rake, 5° pos. side rake.
Speed: 90-100 sfm depending on rigidity of set up, 0.010 in. feed, 0.050-0.100 in. depth of cut
Dry4, oil, or water-base coolant. |
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Finishing;
Turning or Facing |
C-2 or C-4 grade; Positive rake square insert, if possible, 15° or 45° SCEA, 1/32 in. nose radius.
Tool holder: 5° pos. back rake, 5° pos. side rake.
Speed: 110-115 sfm, 0.010-0.015 in. feed, 0.010-0.015 in. depth of cut.
Dry or water-base coolant. |
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| Milling |
C-2 grade
Speed: 25-30 sfm
Feed: 0.02 in. tooth < 3/4 in. dia., 0.003 in. tooth > 3/4 in. dia.
Oil or water-base coolant |
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| NOTES: |
1 |
Oil Coolant should be a premium quality, sulfochlorinated oil with extreme pressure additives. A viscosity at 100°F from 50 to 125 SSU. |
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Water-base coolant should be premium quality, sulfochlorinated water soluble oil or chemical emulsion with extreme pressure additives. Dilute with water to make 15:1 mix. Water-base coolant may cause chipping and rapid failure of carbide tools in interrupted cuts. |
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SCEA - Slide cutting edge angle or lead angle of the tool |
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At any point where dry cutting is recommended, an air jet directed on the tool may provide substantial tool life increase. A water-base coolant mist may also be effective. |
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